The GI was assessed on the facial and lingual surfaces at six sites on each tooth (facial and lingual - distal papillae, margin and mesial papillae). These assessments were performed on all evaluable teeth using moderate pressure sweeping a blunt ended probe, which was engaged in approximately 1 millimetre (mm) into the gingival crevice. The scores could range from 0-3 (0=Absence of inflammation; 1=Mild Inflammation-Slight change in color slight change in texture, no bleeding on probing; 2=Moderate Inflammation -glazing, redness edema and hypertrophy, bleeding on probing; 3= Severe inflammation-marked redness and hypertrophy, tendency for spontaneous bleeding)

Overall plaque scores were calculated taking the average over all tooth sites for a participant. The scores could range from 0-5 (0=No plaque; 1=Slight flecks of plaque at the cervical margin of the tooth; 2= A thin continuous band of plaque (1 mm or smaller) at the cervical margin of the tooth; 3=A band of plaque wider than 1 mm but covering less than 1/3 of the area to be graded of the crown of the tooth; 4=Plaque covering at least 1/3 but less than 2/3 of the area to be graded of the crown of the tooth; 5=Plaque covering 2/3 or more of the area to be graded of the crown of the tooth)

Interproximal plaque scores were analyzed on the mesiofacial, distofacial, mesiolingual and distolingual surfaces, and calculated taking the average over all tooth sites for a participant. The scores could range from 0-5 (0=No plaque; 1=Slight flecks of plaque at the cervical margin of the tooth; 2= A thin continuous band of plaque (1 mm or smaller) at the cervical margin of the tooth; 3=A band of plaque wider than 1 mm but covering less than 1/3 of the area to be graded of the crown of the tooth; 4=Plaque covering at least 1/3 but less than 2/3 of the area to be graded of the crown of the tooth; 5=Plaque covering 2/3 or more of the area to be graded of the crown of the tooth)

rinse with 10ml 0.2% w/v Chlorhexidine Digluconate Mouthwash with alcohol for 1 timed minute twice daily for 6 weeks following brushing with a full brush head of standard toothpaste for 1 timed minute.

rinse with 10ml 0.2% w/v Chlorhexidine Digluconate Mouthwash without alcohol for 1 timed minute twice daily for 6 weeks following brushing with a full brush head of standard toothpaste for 1 timed minute.

Good general health with (in the opinion of the investigator) no clinically significant and relevant abnormalities of medical history or oral/ dental examination.

5. a) Good oral health in the opinion of the investigator (allowing mild to moderate gingivitis to meet entry criteria).

b) A minimum of 20 permanent gradable teeth at screening. (Gradable teeth are those where restorative materials cover less than 25% of the tooth surface graded).

c) Mild to moderate gingivitis present at the screening visit in the opinion of the investigator.

d) Positive response to bleeding on brushing exercise at screening visit. e) A total of 20 bleeding sites or greater at baseline visit.

Exclusion Criteria:

Known or suspected intolerance or hypersensitivity to Chlorhexidine or other study materials (or closely related compounds) or any of their stated ingredients.

5. a) Current or relevant history of any serious, severe or unstable physical or psychiatric illness or any other medical condition (e.g. Diabetes Mellitus) that would make the subject unlikely to fully complete the study or any that increases the risk to the subject or undermines the data validity.

c) Use of concomitant medication that, in the opinion of the investigator, might interfere with the outcome of the study or increases the risk to the subject (eg: phenytoin, calcium antagonists, cyclosporine, warfarin, antibiotics, immuno-suppressants).

d) Use of antibiotics within two weeks prior to the screening visit or throughout the study.

e) Use of any systemic medication which would have an effect on gingival conditions within 14 days of gingival examinations (eg: ibuprofen or aspirin therapy) 6. a) Have current active caries b) More than 3 pockets with 5mm or over. c) Excessive calculus present that interferes with the probing examination for Gingival Index.

d) Other severe oral/ gingival conditions (e.g. Acute Necrotizing Ulcerative Gingivitis) that may compromise the study or the subjects in the opinion of the investigator or gingivitis examiner.

e) Medical conditions which may directly influence gingival bleeding. f) Restorations in a poor state of repair. g) Orthodontic appliances anterior cosmetic restorations and veneers. h) Enamel pitting/irregularities. 7. Subjects using chewing tobacco, pan, pan-masala, gutkha or other chewing tobacco products or subjects who have quit using any of those within the past six months prior to screening.

8. b) An employee of any toothpaste manufacturer or their immediate family.

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study.
To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below.
For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01751178